Shaper for swaged saw-teeth.



J. B. RICKER.

SHAPER FOR SWAGED SAW TEETH.

APPLICATION FILED JUNE 4.1914.

1,153,4M. Patented Sept. 14, 1915.

2 SHEETS-SHEET1.

I Pit/lie, 56' 54 g Z; ,55 INVENTO WITNESSES H ATTO R N EY I. B. RICKER.

SHAPER FOR SWAGED SAW TEETH.

' APPLICATION FILED JUNE 4. I914. 1 15,44, Patented Sept. 14, 1915.

2 SHEETSSHEET 2. 54

I K I ATTORNEY JEROME B. BIGKER, OF ST. MARIES IDAHO.

SHAPER FOR SWAGFID SAW-TEETH.

Application filed June 4, 1914; Serial No. 842,976.

. ing swaged saw teeth.

The object of the present invention is to improve the construction of devices for.

shaping or side dressing saw teeth after they havebeen swaged, and to provide a simple, efficient, and comparatively inexpensive shaper of strong and durable con-- struction, capable of ready adjustment for operating on saw teeth of different sizes or gages, and adapted to uniformly shape the teeth and leave the same straight, with every point the same size.

A further object of the invention is to provide a shaper of this character capable of ready adjustment to vary the degree of swage and adapted to bevel the teeth at the face and back and leave the same the widest at the point.

Another object of the invention is to provide a shaper equipped with an oscillatory operating deviceand capable of having the parts reversed, whereby thesaid device may be operated by either pulling it towardthe operator or shoving it from the operator.

The invention also has forits object to provide a shaper equipped with reversible dies having a plurality of engaging faces at each end and adapted to operate against the sides of the saw teeth without bearing against the saw below the throat. V

Nith these and other objects in view the invention consists in theconstruction and novel combination of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed outin the claims hereto appended, it being understood that various changes in the form, proportion, size and minor details of construction, within the scope of the claims, may be resorted to without departing from the spirit or sacrificing any of the advantages of the inven tion.

In the drawings :-Figure 1 is a side ele- Specification of Letters Patent.

Patented Sept. 14, 1915.

vation of a saw shaper constructed in accordance with this invention. Fig. 2 is a plan view of the same. tudinal sectional view of the saw shaper. Fig. 4 is a central transverse sectional view of the same. Fig. 5 is a reverse plan view of the gage bar. Fig. 6 is a detail view of the guide plates. Fig. 7 is a detail perspective view of one of the shaping dies. Fig. 8 is a detail perspective view of the tooth stop.

Like numerals of reference designate corresponding parts in all the figures of the drawings. o

In the accompanying drawings, in which is illustrated the preferred embodiment of the invention, 1 designates a block consti- Fig. 3 is a longituting the body or frame of the shaper and providedwith a central vertical opening 2 ex tending upwardly from the lower face of the block or body and adapted to receive a saw blade The vertical opening is enlarged at the top and rounded to provide a way 4 for the reception of a longitudinally adjustable gage bar 5, which is segmental in cross section to conform to the configuration of the way 4 and to present a lower fiat face 6 to theteeth 7 of the 'saw 3. The gage bar, by

being segmental in cross section, iseapable of rotary adjustment in the way of the body,

so as to arrange its flat lower face in proper position. The gage bar, which is adjustable backwardly and forwardly to vary the amount of the swage, as hereinafter fully explained, is secured in its adjustment by a set'screw 8, mounted in a central vertical threaded bore 9 and engaging a clamping plate 10. Theclamping platevlO, which is mounted in an extension or groove 11 of the way 4, extends from the front to the rear 3 face of the block and has upturned termi nals 12 fitting against the said faces and adapted to prevent longitudinal displacement of the plate 10. The plate 10, which is forced into frictional engagement with the gage bar by the set screw,is adapted to prevent the same from being notched by the excessive pressure of the set screw, sothat the upper rounded face of the gage bar will remain perfectly smooth and enable an accurate adjustment of the gage bar to be made. The gage bar, which is constructed ofjhardened steel or other suitable material, has its terminal portions resting upon the saw teeth when the shaper is in use, and the said gage bar isprovided in its, lower face with a central'recess 13, located between the terminal tooth contacting portions and having its top wall arranged clear of a pair of transversely disposed shaping dies 14, which are adapted to move inwardly beneath the gage bar.,

The gage bar carries a tooth stop 15, extending longitudinally of the gage bar from one end of the intermediate recess 13, and provided with a vertical stem 16, constitut- .ing a pivot and mounted in a vertical opening 17in the gage barn. The tooth stop, WhlCll is L-shaped, is secured in the vertical opening 17 by a nut 19, located below the free terminal portion of a spring 20, which is engaged by an upper nut 21. The spring 7 20, which has a smooth attaching portion 22 tofitthe rounded upper face of the gage bar, is secured to the same by a' screw 23 or other suitable fastening device, and it is bent or flexed at an intermediate point to arrange its'free terminal portion so that the side faces. thereof will be disposed in a vertical plane. The terminal portion of the spring extends through a slot 24 in the upper portion of the stem 16, which is threaded for the reception of the nuts 19 and 21. The lower horizontal body portion of the saw stop is yieldably maintained in a y central longitudinal position by the spring,

which permits the saw stop to be deflected for enabling atooth to pass its engaging end. The tooth stop is provided at its ongaging end with a tapering recess 25, hav ing an inclined lower face or wall 26 and an upper approximately horizontal face or wall 27, which is beveled at its outer terminal portion 28 to enableit to be readily arranged upon a saw tooth. The point of the tooth extends into the recess of the saw stop, which rests'upon the top of the tooth, and. engages beneath the tooth and exposes the side face oft-he tooth to the shaping action of'the dies; The saw teeth, after being operated on by a swa er, have a considerable lack of uniformity, andthe particular construction of the saw stop enables the saw teeth to be accurately shaped or dressed to the same gage, so that they will beperfectly uniform and in longitudinal alinement. The gage'bar is adjustable longitudinally with respect to the shaping dies to vary the amount of the swage, it being moved forwardly'to increase the swage, and rearwardly tolessen the same, the adjustment of' a single fastening means, viz: the set screw 8, being all that is necessary to secure this result.

The transversely disposed shaping dies, which are reverslble to present either end to the teeth of. the saw, are square; in cross section and their ends are beveled at the corners to form four tooth engaging faces 29 and a central flat end abutment face 30. By

, providing four beveled tooth engaging faces ranged in inner rectangular portions 31 of the transverse openings in the block or body, are provided with central threaded bores or openings 32, extending longitudinally of the dies and receiving threaded terminal portions 33 of connecting screws 34, which pierce transversely disposed die actuating screws 35. The die actuating screws, which are right and left handthreaded, engage right and left hand screw threads of enlarged outer portions 36 of the transverse openings of the block or body. The outer threaded portions of the transverse openings of the block and the die actuating screws are of greater diameter than the dies, which are directly engaged by the said actuating screws. By this construction the rectangular dies may be readily introduced into the inner portions of the transverse openings of the block or body through the outer en larged threaded portions of the said openings. The die actuating screws are provided with central smooth longitudinal bores or openings 37, for the reception of rounded portions of the connecting screws 34, which are provided at their outer ends with heads 4.

' which receive circular collars or bushings 41. i

provided with rectangular openings 42 for the reception of outer reduced squared portions 43 of the die actuating screws. The bushings, which are removable from the openings of the arms or levers of the oscillatory operating device, are provided at the top with upwardly projecting tapering tongues 44, which are secured in correspondingly shaped recesses 45 of the arms or levers 40 by screws 46 or other suitable fastening devices. The screws pierce the arms or levers 40 above the heads or enlargements and pass through openings in the tongues 44 of the bushings 41. The outer reduced polygonal portions 43 of the die actuating screws are slidable inthe openings of the collars 41, and the said screws are adapted to move inwardly and outwardly when the operating device 38 is oscillated. The arms or levers 40 are provided at their upper ends with curved portions l7 extending in advance and in rear of the shank member 39, and provided with arcuate slotsS for the reception of an adjusting bolt 49, which also passes through a transverse opening in the shank member 39. The shank member 39, which consists ofa block or piece, is provided in its side faces with recesses 51, which have curved top Walls and receive the curved portions 47 of the arms or levers 4:0. The adjusting bolt is equipped atone end with a head and at the other end with a nut, and is adapted to be tightened to secure the arms or levers in their adjustment. The arms or leversare capable of relative ad? justment to arrange the dies in proper posi tion, so that the teeth may,.in the shaping operation, be bent or flexed past the center when necessary to insure the teeth being left in a central position in alinement with one another. By connecting the dies with the oscillatory operating device and simultaneously rotating the adjusting screws, it will be impossible for one die to move in advance of the other, and an accurate shaping of the saw teeth is obtained. The central connecting or shank member is equipped with an upwardly extending handle or grip 52 which is secured to an integral tang 53, but any other suitable means maybe employed for mounting the handle of the cen' tral connecting or shank member 39. In

order to enable the saw shaper to be accurately guided along the saw, it is equipped at the lower face of the block or body 1 with 1 adjustable guiding plates 54;, fitted fiat against the lower face of the block at opposite sides of the vertical opening and provided at their inner edges withrecesses 55 and having depending vertical guiding flanges 56 located in advance and in rear of the recesses 55. The recesses 55 form an enlarged opening or space between the guiding plates between the intermediate portions of the inner edges of the guiding plates, which are provided with transverse slots 57 for the reception of screws 58 or other suitable fastening devices, for securing the guiding plates to the block or body 1. The screws 58 are mounted in threaded perforations or bores of the block, and they are also adaptedto secure the shank 59-of a handle 60 to the lower face of the block or body. The handle 60, which is adapted to be arranged at either side of the block or body, projects laterally from the same. The handle 60enables the operator. to hold the shaper in proper position on the saw and the screws 58, which areprefera-bly three in number for each of the guiding plates, per

' clamping mit an adjustment of the handle at each side of the shaper. By removing the gage bar and turning it end for end to reverse the tooth stop, the saw shaper may be arranged so that the dies can be operated either by pulling the oscillatory handle toward the operator or by pushing the same from him.

What is claimed is:

1. A saw shaper of the class described including a saw shaper body having a saw receiving opening enlarged at the top to form a way, a gage bar slidable in the way and supported by the walls thereof, said gage bar being provided with a tooth stop, and clamping means mounted on the body for exerting pressure against the gage bar to said plate having projecting terminals engaging the said body, and a screw piercing the upper portion of the body and engaging the clamping plate. j

3. A sawshaper of the class described including a body having a saw receiving opening enlarged at the top to form a way, the latter being substantially circular in cross section, a gage bar slidable in the way and supported by the walls thereof, said gage bar being segmental in cross section to conform to the configuration of and be capable of rotary adjustment in the said way and presenting a lower flat face adapted to rest upon the saw teeth, and a tooth stop carried by the gage bar. V

4. A saw shaper of the class described including a body having a saw receiving open ing, a laterally movable tooth stop arranged to engage the saw teeth, and meansfor yield ably maintaining the tooth stop in a central position.

5. A saw shaper of the class described in cluding a body having a saw receiving opening, a pivotally mounted tooth stop arranged to move laterally, and means for yieldably maintaining the tooth stop in position for engaging the saw teeth.

spring engaging thesl ot of the stein of pivot and yieldably maintai ing the tooth stop in position for engaging the teeth. 8. A saw shaper of the class described in cluding a body having a savvrec'eiving' open ing, a gage barmountediin' the said opening, alaterally movable tooth stop having stem or pivot mounted on the gage bar, and a spring also carried by the gage bar and connected withthe stem or pivot for yie'l'dablyr maintaining the tooth stop in" position for engaging the saw teeth; a a H A saw shaper of the class described includln'ga body having a saw receiving opening, a gage bar mounted in the opening, a

. laterally movable tooth stop located beneath tending through the opening, a tooth stop located beneath the gage bar and provided with a". stem or pivot extending upwardly through the same and projecting therefrom, the projecting portion of the stem or pivot being slotted and exteriorly threaded, a

spring mounted on the gage bar and extending through the slot of the stem or pivot, and-nuts mounted on the threaded portion of the stem or pivot and arranged above and below the spring. a 1

11. A- saw shaper of the class described includinga body having a saw receiving opening and a saw stopprovided with a tapering recess arranged to receive the point of a saw tooth, said recess having a horizontal top wall to 7 rest upon the top of the saw and beveled at the front of the said top wall, said recess presenting an inclined face for en gaging beneath the point of the tooth.

12." Asavv shaper of the class described including a body having a saw receiving opening and a yieldably mounted l'aterally'mov able tooth stop oppositely beveled at the side faces to provide a' longitudinal tapered portionr l3. A saw 'shaper of the class described lIl-- :cludi'ng a body having a saw'recei'vin'g' opening, transversely disposed shaping dies loicated at oppositesides of the said opening and reversible to present eitheren'd to a saw, die actuating screws; mounted in the body I Vand'directly engagingfthe outer ends of the dies, and connecting screws projecting centrally from? the inner endsof the adjusting screws and securing the said dies to the same, whereby the dies are positively moved both inwar'dly'and outwardly by the adj-11sting screws:

' actuating screws mounted in 14(- A saw' sliaper of the class described in cliiding a body having a saw receiving opening, transversely disposed shaping dies located at opposite sides of the opening and reversible to present either end to a saw, die the body and abutting against the outer ends of the dies, and means for securing the dies to the screws to cause a: positive inward and outward movementof the dies and for permitting the dies to be" turned end for end;

15'. A saw shaper of the class described including body having saw receiving opening", transversely disposed shaping dies located at opposite sides of the said opening andreversible to present either end to a saw, die actuating screws mounted in the body and directly engaging the outer ends of the dies, and connecting screws piercing the die a'c'tu'ating screws and the said dies and pei'iinitting the dies to be turned end for end, said connecting screws being also provided with means for engaging the actuating screws at the outer ends thereof.

16. A saw shaper of the class described including a body having a saw receiving opening, transversely disposed shaping dies slidably mounted in the body at opposite sides of the opening, right and left hand threaded screws also mounted in the body and arranged to actuate the dies, said screws having outer polygonal portions, and an oscillatory operating device comprising diverging arms or levers provided with openings, bushings mounted in the said openings and having polygonal openings slidably receiving th'e'polygonal portions of the actuating screws, said bushings having projecting tongues, and fastening means for securing said tongues to the arms or levers.

17. A saw shaper of the class described including a body having a saw receiving opening, transversely disposed right and left hand threaded screws mounted in the body at oppositesides of the opening, dies actuated by the screws, an oscillatory operating device comprising arms or levers slidably interlocked with the screws and provided with top portions having arcuate slots extending in advance and in rear of the levers, and a handle provided with means operating in the said slots and adjustably connecting the arms or levers.

18. A saw shaper of the class described including a body having a saw receiving open- 'ing' transversely disposed right and left hand threaded screws mounted in the body at opposite sides of the opening, dies actuated by the screws, an oscillatory operating device comprising arms or levers slidably interlocked with the screws and provided with top" portions having arcuate slots extending in advance of and in rear of the levers, ashank' niei'nber interposed between the arms or levers and provided with a handle, and a fastening device carried by the shank member and operating in the said slots to adjustably secure the arms or levers to the shank member.

19. A saw shaper of the class described in cluding a saw shaper body having a longitudinal saW receiving opening, a longitudinally disposed gage bar slidable in the opening and extending outwardly beyond the 7' body, and a tooth stop carried by the gage bar and having attaching means located be- JEROME B. BICKER. Witnesses:

J. H. POWELL, F. O. SoHMiDT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

